Steam turbine especially



K. BAUMANN.

STEAM TURBINE ESPECIALLY APPLICABLE TO THE PROPULSION 0F MARINE VESSELS.

APPLICATION FILED JAN. I0 I918.

1,31 1,547. Patented July 29, 1919.

3 SHEETS-SHEET I.

Figi 15- 17 5 5 wum EssEs INVENTOR Em PLANDGRAPII co., WASHINGTON. D.

K. BAUMANN.

STEAM TURBINE ESPECIALLY APPLICABLE'TO THE PROPULSION 0F MARINE YESSELS. APPLICATJON FILED JAN-10,1918.

1 1,3 11,547. Patented .Iuly 29, 1919.

Z'SHEETS-SHEET 2.

I 1 d 1. I7 l l E 12 c o o o o 0 F 0 0 o o O 0 WITNESSES INVENTOR THE COLUMBIA I'LANOGRAPH co., WASHINGTON. n. c.

K. BAUMANN.

STEAM TURBINE ESPECIALLY APPLICABLE TO THE PROPULSION 0F MARINE VESSELS.

APPLICATION FILED JAN. 10. 1918. i

Q 1, 3 1 1,547.- Patented July 29, 1919.

3 SHEETS-SHEET 3.

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1 1| COLUMBIA I'LANOGIIAIII co. WASHINGTON. D. c.

KAEE' AUMANN, or umusron, v I

- ELECTRIC AND MANUEAorUEINecoMPnNY, LIMITED, A COMPANY or GREAT BRITAIN.

sTATEs PAT ENGLAND, AssIeNoE. TO THE BEI'rIsH WESTINGHOUSE tries.

STEAM-TURBINE ESPECIALLY APPLICABLE TO THE PROPULSION 0]? MARINE VESS-ELS.

Specification of Letters Patent. Patented July 29, 1919.

Application filed January 10, 1918. Serial No. 211,282.

To all whom it may concern Be it known that I, KARL BAUMANN, a citiv zen of the Confederation of Switzerland, and a resident of Urmston, in the county of Lancaster, England, have invented a new and useful Improvement in Steam-Turbines Especially Applicable to the. Propulsionof Marine Vessels, of which the following is boxes from which the steam is respectively admitted to said elements. With such a construction a partition or diaphragm is nec essary for separating the ahead from the astern portion of theturbine.

The object of the present inventionis to.

provide an improved construction of partition or diaphragm for separating theahead from the astern element of the turbine such that the nozzle boxes for the admission of steam to both the ahead and astern elements may be located in approximately the same plane perpendicular to the turbine shaft whereby the overall length of the turbine may be reduced to the smallest limits.

A further object of the invention consistsin so constructing the aforesaid partition or diaphragm that no portion thereof is subjected to steam at high pressure.

A typical constructional form of the invention is illustrated in the accompanying drawin s in which Figure 1 is a central, longitudinal section of a marine turbine having a partition or diaphragm for separating the ahead from the astern portion thereof constructed in accordance with this invention, Fig. 2 being a cross-sectional view taken on the line IIII of Fig. 1. Figs. 3 and 4 are views similar to Figs. 1 and 2 illustrating a modification of the construction illustrated in Figs. 1 and 2.

Referring now to Figs. 1 and 2, the ahead portion of the turbine is illustrated at 5 and the astern portion at 6. The partition or diaphragm separating the ahead from the astern portion comprises a tubular center portion 7 surrounding the turbine shaft 8 provided with a labyrinth or other suitable packing 9 So as to reduce the leakage of steam along the shaft from the ahead por-' tion 5 to the astern portion 6, or vice versa.

At the ends of the tubular center portion 7 there are respectively located segmental diaphragms 10, 11, said diaphragms being connected together by webs 12, .13, which extend from the central tubular portion 7 along the edges of the segmental diaphragms 1'0, 11 to the periphery thereof. The partition or diaphragm thus formed is held in position in grooves 14:, 15, formed in the cylinder wall. 7

The nozzle, boxes for the admission of steam to the ahead portion of the turbine are shown at 16, 17, the single nozzle box for admitting steam to the astern portion of the turbine being shown at 18. The nozzle boxes here illustrated are of the kind described, in United States patent application,

Serial No. 145,708, although nozzle boxes of any other suitable type may be employed.

With a partition formed as above described and illustrated in Figs. 1 and 2 it will be seen that the nozzle boxes both for the ahead and astern portions of the turbine may be mounted within the turbine cylinder in approximately a single plane perpendicular to the turbine axis, the nozzle boxes 16, 17 for the ahead portion being on one side and the nozzle box 18 for the astern portion being on the other side of the partition or diaphragm, the latter completely shutting off the ahead from the astern portion of the turbine.

With this arrangement the nozzle boxes are, when the turbine is in operation, surrounded by steam at comparatively low pressure and consequently by steam at a comparatively low temperature, particularly in the case of saturated steam. In order to prevent excessive condensation or cooling of high pressure steam in front of the nozzles the nozzle boxes may be lagged with suitable insulating material.

Referring to Figs. 3 and 4, the partition or diaphragm is here provided with additional segmental diaphragms 19, 20, said diaphragms being supported in position in grooves 21, 22, formed in the free ends of the tubular center portion 7, In order com? pletely to separate-the space surrounding the nozzle boxes from the remaining portions of the u bine addit ona divisi n pla e 23 2%.,

2.5 may e pmvidedfs rr ts ap i iea.

as shown, in grooves in the turbine cylinder. When such additional diaphragms and diisionpl tes pmvided th r-v rounding the nozzle boxes will be superaphragms carrying the stationary b'lading in a turbine of the impulse type. If desired,

' however, the partition or diaphragm may be made integral with the turbine cylinder.

The invention is not limited to the constructional form here-inabove described as this may be varied without departing, from the spirit and sco e of the invention. For

example, the tota number of nozzle boxes used may be greater or less than three and the number of said nozzle boxes respectively used for the ahead and asternlelements may be varied as may be found desirable, the position of the webs connecting the two segmental portions of the diaphragm being correspondingly varied in accordance with the space needed for the accommodation respectively of the ahead andthe astern nozzleboxes. f- I claim as my invention:

. .l- .A s e m turb ne for preruls -one marine ves el having beth and as portions and a partition for the ahead from the astern portion comprising a tubular portion. surroun ing I the shaft and at either end thereof a segmental diaphragm located in a plane perpendieular to the turbine axis, said segmental diaphragms being'connected together by webs or the like extending from the .central ,tubular portion along the edges of the segmental diaphragms to their peripheryso' that'thc nozzle boxes for the admission" of steam'to both the ahead and astern portions inay be located in approximately a's'ingle planeperpendicular 'to' 'the turbine axis'l 1 f c 2. A marine steam tur bine'having-a parti-c tion for separating the-ahead from thejastern portions as claimed in claim 1,1, proyi'd- 7 ed with; additional segmental diaphragms formed on the free ends of the central tubu-l lar portion so as to separate, the' spacejsur ,7

rounding the nozzle boxes from thejremai'n ing portion of the turbine. f a c In testimony whereof, If have hereunto subscribed my name this 23rd day 'of"No-' vember, 191 7. w,

Copies 01 this patent may be obtaineg for-five cents each, by addressing the floniinissi oner or ra'tents Washington, :D. G.

" KARL 'BAUMA N, '7 

